Mercurial > repos > blastem
changeset 738:8972378e314f
Fix register to operator mapping for channel 3 special mode
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Tue, 26 May 2015 22:22:30 -0700 |
parents | 043393b79e28 |
children | 2317bdca03b4 fc68992cf18d |
files | ym2612.c |
diffstat | 1 files changed, 6 insertions(+), 4 deletions(-) [+] |
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--- a/ym2612.c Tue May 26 20:00:50 2015 -0700 +++ b/ym2612.c Tue May 26 22:22:30 2015 -0700 @@ -585,14 +585,16 @@ ym_channel * channel = context->channels + chan_num; uint32_t inc, detune; if (chan_num == 2 && context->ch3_mode && (op < (2*4 + 3))) { - inc = context->ch3_supp[op-2*4].fnum; - if (!context->ch3_supp[op-2*4].block) { + //supplemental fnum registers are in a different order than normal slot paramters + int index = (op-2*4) ^ 2; + inc = context->ch3_supp[index].fnum; + if (!context->ch3_supp[index].block) { inc >>= 1; } else { - inc <<= (context->ch3_supp[op-2*4].block-1); + inc <<= (context->ch3_supp[index].block-1); } //detune - detune = detune_table[context->ch3_supp[op-2*4].keycode][operator->detune & 0x3]; + detune = detune_table[context->ch3_supp[index].keycode][operator->detune & 0x3]; } else { inc = channel->fnum; if (!channel->block) {